WhileI

问题详情：

While I ________to the programs, my mother ________outside.

A. listened; was washing                                      B. was listening; washed

C. was listening; was washing                               D. was listening; is washing

【回答】

C  两个动作同时进行，都应用过去进行时或现在进行时，故选C。

知识点：动词时态

题型：选择题